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authorEdward Cree <ecree@solarflare.com>2017-12-21 12:00:26 +0300
committerDavid S. Miller <davem@davemloft.net>2017-12-21 23:14:26 +0300
commitc1be48214543c4e5267c43d2c00ac2d9bb671381 (patch)
tree6c7e91d27b02742e0615d799a338e0bc3bd811ff /drivers/net/ethernet/sfc/net_driver.h
parentd31a59662529f48d03a0d09d1c2ffb1197f6a1ca (diff)
downloadlinux-c1be48214543c4e5267c43d2c00ac2d9bb671381.tar.xz
sfc: support variable number of MAC stats
Medford2 NICs support more than MC_CMD_MAC_NSTATS stats, and report the new count in a field of MC_CMD_GET_CAPABILITIES_V4. This also means that the end generation count moves (it is, as before, the last 64 bits of the DMA buffer, but that is no longer MC_CMD_MAC_GENERATION_END). So read num_mac_stats from the GET_CAPABILITIES response, if present; otherwise assume MC_CMD_MAC_NSTATS; and always use num_mac_stats - 1 rather than MC_CMD_MAC_GENERATION_END. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: Bert Kenward <bkenward@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/net_driver.h')
-rw-r--r--drivers/net/ethernet/sfc/net_driver.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 6b8730a24513..4cedc5c4c6d9 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -774,6 +774,8 @@ struct vfdi_status;
* @port_initialized: Port initialized?
* @net_dev: Operating system network device. Consider holding the rtnl lock
* @fixed_features: Features which cannot be turned off
+ * @num_mac_stats: Number of MAC stats reported by firmware (MAC_STATS_NUM_STATS
+ * field of %MC_CMD_GET_CAPABILITIES_V4 response, or %MC_CMD_MAC_NSTATS)
* @stats_buffer: DMA buffer for statistics
* @phy_type: PHY type
* @phy_op: PHY interface
@@ -922,6 +924,7 @@ struct efx_nic {
netdev_features_t fixed_features;
+ u16 num_mac_stats;
struct efx_buffer stats_buffer;
u64 rx_nodesc_drops_total;
u64 rx_nodesc_drops_while_down;